diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cbdf17..4a5597d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [Unreleased]
+
+### Fixed
+
+- `Configuration::LOCAL_ENDPOINT_PATH`, the class docs and the README's
+  self-hosting example pointed at `/active_agent/api/traces`, a path no
+  current dashboard mount serves. The actionagent engine ingests at
+  `<mount>/api/traces` and is mounted at `/activeagents` by default, so the
+  constant and the docs now say `/activeagents/api/traces` and note that a
+  custom mount changes the prefix. (#3)
+
 ## [0.2.0] - 2026-08-14
 
 ### Added
@@ -18,8 +29,6 @@
   the application sends the model, so enabling this is a data-handling
   decision — the truncation is a cap on trace size, not a redaction boundary.
 
-## [Unreleased]
-
 ## [0.1.0] - 2026-08-10
 
 First public release of both gems: `activeagents-telemetry` (the shared
diff --git a/README.md b/README.md
index ff9c873..f350f90 100644
--- a/README.md
+++ b/README.md
@@ -56,12 +56,16 @@ backtraces are never transmitted.
 
 ## Self-hosting
 
-Point the endpoint at your mounted dashboard — same gems, same wire format:
+Point the endpoint at your mounted dashboard — same gems, same wire format.
+The dashboard engine ingests at `<mount>/api/traces`; its install generator
+mounts it at `/activeagents`, so on a default install that is:
 
 ```ruby
-config.endpoint = "https://your-app.example.com/active_agent/api/traces"
+config.endpoint = "https://your-app.example.com/activeagents/api/traces"
 ```
 
+If you mounted `ActionAgent::Engine` somewhere else, use that prefix instead.
+
 ## Development
 
 ```bash
diff --git a/lib/activeagents/telemetry/configuration.rb b/lib/activeagents/telemetry/configuration.rb
index e038408..55c0894 100644
--- a/lib/activeagents/telemetry/configuration.rb
+++ b/lib/activeagents/telemetry/configuration.rb
@@ -14,13 +14,17 @@ module Telemetry
     #   end
     #
     # A self-hosted ActiveAgent dashboard is the same thing with a different
-    # endpoint — point it at "https://your-app.example.com/active_agent/api/traces".
+    # endpoint — point it at "https://your-app.example.com/activeagents/api/traces"
+    # (the actionagent engine's default mount; adjust the prefix to wherever
+    # the host app actually mounted ActionAgent::Engine).
     class Configuration
       # The hosted platform. Self-hosters override `endpoint`.
       DEFAULT_ENDPOINT = "https://api.activeagents.ai/v1/traces"
 
-      # Path a mounted ActiveAgent::Dashboard::Engine serves traces on.
-      LOCAL_ENDPOINT_PATH = "/active_agent/api/traces"
+      # The ingest path of the dashboard engine (ActionAgent::Engine) at its
+      # default mount. The engine ingests at "<mount>/api/traces", so a host
+      # that mounted it elsewhere uses that prefix instead.
+      LOCAL_ENDPOINT_PATH = "/activeagents/api/traces"
 
       # Attribute keys scrubbed from spans before delivery. Name-based — a
       # secret inside free text is not caught; see the wiki's privacy page.